Chaem of a pencil

I like a pencil very much,
Because I realize that how long I studied.
Pencil is one of motivation of mine.

By the way, there is such a famous joke.


When NASA first started sending up astronauts, they quickly discovered that ballpoint pens would not work in zero gravity. To combat the problem, NASA scientists spent a decade and $12 billion to develop a pen that writes in zero gravity, upside down, underwater, on almost any surface, and at temperatures ranging from below freezing to 300 degrees Celsius.

The Russians used a pencil.


I love this joke!
See you tomorrow :)